Question 831209
Let {{{ x }}} = pounds of M&M's needed
{{{ ( 2x + 3*2 ) / ( x + 2 ) = 2.2 }}}
{{{ 2x + 6 = 2.2*( x + 2 ) }}}
{{{ 2x + 6 = 2.2x + 4.4 }}}
{{{ .2x = 1.6 }}}
{{{ x = 8 }}}
8 pounds of M&M's are needed
check:
{{{ ( 2x + 3*2 ) / ( x + 2 ) = 2.2 }}}
{{{ ( 2*8 + 3*2 ) / ( 8 + 2 ) = 2.2 }}}
{{{ ( 16 + 6 ) / 10 = 2.2 }}}
{{{ 22 = 2.2*10 }}}
{{{ 22 = 22 }}}
OK